建設汚泥の処理と有効利用

Abstract

A number of waste slurry or sludge with high water content are produced in construction work or environmental purification, especially in foundation work, and a proper method to treat these waste materials must be established based on a viewpoint of environmental geotechnology. In this paper, we propose an utilization system of waste slurry, which consists of two treatment methods for dehydration and solidification. The selection of the treatment methods should be carried out based on the density and the viscosity of the waste slurry. Through experimental studies it is clarified that Carbonated-Aluminate Salts, newly developed, and coal fly-ash, one kind of industrial wastes, are used effectively for flocculant and stabilizer in this system, and this system realized efficient treatment, decrease in volume, stabilization, and recycling as resources.